Portable apparatus and process for vulcanized repairs of pneumatic tires.



- E. ANSELMI. PORTABLE APPARATUS AND PROCESS FOR VULCANIZED REPAIRS 0F PNEUMATIG TIRES. APPLIOATION FILED MAY 17, 1907.

918,943, I Patented Apr. 20,1909.

tion of the apparatus.

ERNESTO ANSELMI, OF VITERBO, ITALY.

PCRTABLE APPARATUS AND PROCESS Specification of Letters Patent.

FOR VULOANIZED REPAIRS OF PNEUMATIC TIRES.

Patented April 20, 1909.

Application medley- 17., 1907. Serial No. 374,293.

and useful Improvements in Portable Ap-" paratus and Processes forVulcanized Repairs' of Pneumatic Tires, of which the fol owing is a specification. F

The-present invention .refersto a portable apparatus which allows all vulcanized repairs for damages in )neumatic' tires in general, and in automo ile tires more articularly, to be made Without the ai of special Workshops. The said repairs may be made anywhere, in a short time, easily and with the best results.

Theaccompanying draping shows a practical application of the said invention.

Figure 1 is a pers ective view of the apparatus at work. ig. 2 shows the heat conducting plate. Fig. 3 is a vertical see- Fig. 4 is a perspective view of acase in which not only the apparatus but all the accessories and all the reserve material are kept.

The apparatus is made of the following parts:

1. A small case a (Fig. 4) designed to contain all that is necessary to accom lish the repair and to act as rop to the w 1ole apparatuswhile at wor The dimensions of the said case vary, of course, according to circumstances, but it is best to use the following ones, given here as an example, Without, however, considering it absolutely necessary'to adopt them; the said dimensions are 11 X 11x23 centimeters.

2. A'metal-vise 11 consisting of a strong curved bar in the. shape of a U; the screw pivot c is inserted. in one of its branches, near the curve, which allows the vise to .be

fixed horizontally at the bottom of the case when turned upside down where a hole is made for thepurpose (Fig. 3). The other branch of the vise has pressing screws (1 (three are seen in the drawing).

3. Asmall alcohol or benzin lamp 2.

4. A special thermometer f which can bear no scale but .on which a very. clear sign, preferably red and large, marks the temperature oi 153,- which is the temperature necessary to the process I will explain later The heat conductor 9 (Fig. 2) made of a plate either of copper or of any other suit-' able metal; this plate is furnished with an opening it in order to give passage to the gas of the lamp; near this opening it the tube 70' made of the same metal as the plate is secured, the said tube, destined to receive the thermometer f is full of paraffin. -The surface of the plate on which the tube is secured as well as the latter, is covered with pasteboard I either made of amiantus or of any other matter of the same kind in order to )rotect them against too ra )id a cooling.

esides the utensils already (lGSOllbLd, other materials are still necessary and form part of the whole apparatus; they are held in the ease and the way some of them are to be used is described later on together with the process, with reference to the drawing. The main materials are:

6. A tube of cement made of first class india rubber, that designed l'or stamps, dissolved iii-carbon disullid to a l'air density.

7. A set of small iron, lead or other suitable metal plates.

8. Some prepared pieces, made of an indla rubber sheet previously vulcanized (cut, for instance, out of a pneumatic tire out of use) and of another indiarubbcr sheet for stamps. The two sheets are placed one over the other and stuck together by means of the above said'cement. pieces made of two thin plates or sheets, as described above, one may also use, with advantage, some pieces formed by only one india' rubber sheet, for stamps, which should always be of first class.

In order to repair any damage, the subsequent dlrections are to be i'ollowcd; after having ascertained the nature of the damage,

I select among the materials forming the set, aprepared piece of rubber of the necessary size, to cover the damage entirely, and to extend over beyond it for about the len th of half a cent1meter. A brush is then soa ed in benzin and passed two or three times over the repared piece of rubber, but on the gray sir e so as to revive it, and it is then left to dry. As said above, simple pieces of rubber may be used in an analogous way. The surfaceof the pneumatic tire to be repaired is then carefully rubbed with.

. glassa er on the place of the damage and a litt e istance around the same; a brush soaked in benzinis then passed over it several times until the said parts are perfectly clean. A given quantity of cement is Instead. of the the damage.

stop it up, one should be careful to coat the rims of the opening and those of the piece with some cement. It is then left to dry for a few minutes while the apparatus is put up. The case, is for that purpose, turned u side down and the screw pivot c-is intro ucedinto the opening made for the said purpose, and is firmly screwed there; the case acting as a support. This done, piece m is applied to the part of the pneumatic tire n where the damage pre'...,usly covered with cement is found, the latter having grown hard. Care should be taken to ascertain that the piece covers the damage well, and that it presses it firmly. It is to be understood that the' piece of (rubber if it is the one made of two sheets, should be stuck onthe gray side. A plate 0 is then selected of the due sha e and size, furnished with an india rubber s met and placed under the pneumatic tire directly opposite the place to be repaired. A piece of ve etable parchment q is preferably placed on the adhering piece in order to prevent the piece under repair from being stained by the vulcanization; the lead-plate 1' is placed on the parchment, the said plate being of a size to project beyond the edges of the rubber piece; one end of the heating plate g, the upper surface of which has been coated with amiantus l, is placed on the lead plate between the branches of the vise. Care should be taken to ascertain that the various parts are directly and symmetrically one above the other. The screws (1 of the vise are then tightened, and therefore press gradually on the parts through the medium of an iron plate 0, special care being iven not to choke the lateral folds u on the rim of the tube. The arts being in .position the lamp e is lighted and placed under the free part of the heating plate projecting from the vise as shown in drawing (Figs. 1 and 3). 'In order to protect the pneumatic tire against the flame of the lamp an amiantus pastef is introduced in the tube.

board 8 is located on the tire toward the lamp. Preferably ..stri s t of amiantus are also placed between the tireaand the heat conductor 9. The heat of the the paraffin contained in the-tn melt. As soon as it melts the thermometer The quicksilver column will soon be seen to rise and when ,it has reached the'mark made on the tube, it will indicate that the temperature has reached to the point in which the vulcaniplate, causes zation commences. By keeping the teme thereof to perature even for about 12 minutes, which is easily obtained by taking away and then replacing the lamp, according to the indications given by the quicksilver column, a perfect vulcanization of the piece is obtained, so that it is firmly secured to the tire. A sli ht characteristic odor produced by the vulcanizing of the india rubber easily perceptible if inhaled on approaching to the preiparation, shows that the operation is we managed. At the end of 12 minutes, the flame is extinguished. When sufficiently cold so that the hand will be able to stand the contact with the different parts of the instrument (which will be about 10 min utes) the screws are loosened, the pneumatic tire is taken out of the vise, the plates removed, and after having freely sprinkled the parts with talc the repair is made. All there is to be done now is to undo the apparatus and to replace it in the case. The time necesssary for a repair is about 35 minutes.

Havin now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is: j

1. A portable apparatus for repairing pneumatic tires, comprising a sup ort in the form of a case for containing t 1e several parts of the apparatus when not in use, a U- shaped bar having one member provided with means whereby it may be secured to the case and its other member provided with screws, metal plates adapted to'be placed on opposite sides of the tire, a heating plate covered with asbestos, said plate bein apertured and provided with a tube adapte to contain parafiin, a thermometer adapted to be placed in the said *ube, the tire and plates being ada ted to be clam ed between the members of t e said bar with a portion of the heating plate rojecting therefrom, and alamp adapted to e placed under the projecting portion of the sald plate. I

2.- A portable apparatus for repairing neumatlc tires, comprising a sup ort in the orm of a case for containing t e several parts of the ap aratus when not in use, a vise ada )ted to e secured to the case, metal plates a apted to be laced above and below the tire, a heating p ate apertured and providod with a tube projecting from its upper surface and adapted to contain paraflin, a thermometer adapted to be placed in the tube,'the tire and plates being adapted to be clamped in the use with a portion of theheating plate projecting therefrom, and clamp adapted to be placed under the projecting portion of the said plate.

3. 'In an apparatus for repairing pneumatic tires, the combination with a vise, of a heating late having an aperture therein and provide with a tube pro ecting from its upper surface, said tube belngadapted to contain paraffin and to hold a thermometer, the

, 5 4. In an apparatus for repairing pneumatic said plate being clamped in the vise with the In witness whereof I, said ERNESTO AN- tire and having a portion projecting beyond SELMI have signed this specification, at Rome 10 the Vise, and a lamp for heating the said in the Kingdom of Italy, this 2nd day of plate. May 1907 ERNESTO ANSELMI. tires, a heating plate covered with asbestus,- In presence ofand provided with an aperture and with a- A RAGGI, tube projecting from its upper surface. T. I. BENEDETLI. 

